I found this neat site where you can download different verisons of flash such as Flash 2 all the way to Flash 8.

There all basically fully functional free trails but they don't exist on the macromedia site anymore.

http://flash-ascript.blogspot.com/2007 /06/first-steps-of-flash-futuresplash.
html

after the trail is over than you can either uninstall it or buy it.